as a quick fix you can just override it: #uicore-page {opacity: 1 !important} but I'm sure it is used for some kind of fade in or so. Never used that plugin.

I have spent like two hours reseting previous settings

It shouldn't take you that long as you seem to work in that area. It literally to me 10secs to find it (right click, inspect, done)

you have some "uicore" plugin that adds "opacity:0" to your page. As that is not an Elementor thing it would be the best to ask their support

it's snapping to the containers where you've enabled the snapping. At least you see the places in the source code when you search for `{"scroll_snap":"yes"}`. So just select your containers/sections and disable the setting

sounds like you've enabled scroll snapping: https://elementor.com/features/scroll-snap/

sure but it depends on your background. Just set it to be position to bottom right in the background position drop down and your hero image top "top right". If you created the images correctly they should match. Otherwise you have to edit the images.

yeah, without screenshots it's hard to tell what we are seeing is right or not.

Sometimes when I clear my cache, the text returns to normal for a while (the other stuff remains broken)

so it sounds like a caching issue. Try to disable Litespeed for a while and your minify plugin to see if that makes any difference.

You also have some broken HTML code in there with missing start tags (check your code) and DSGVO issues with your fonts (add them locally!). Also your have many PNG files that should be JPG files (or webp, but not a PNG) and you should load smaller images and not the full version.

It's also not the best advertisement for your web agency if you start asking basic questions about preview/live site issues or have DSGVO issues.

works the same if I enable the shape divider: https://imgur.com/a/zoClupc  Otherwise show your setup as you didn't mention the shape divider in your initial question

hopefully you are talking about containers and not the old outdated sections ;-)

You can add a padding-bottom in the top one and a negative margin-top in the second one. Then the second container is inside the first one: https://imgur.com/a/1jFbN0Z 

yes, Elementor doesn't change anything here. Just use WPVivid migrate or Duplicator and move it.

you have to align it with the container around the headline widget.

you do it with custom CSS. Like in your theme or the normal CSS section of Elementor. I don't think there is a setting in Elementor somewhere to do that. But I only have the free version :)

If it is an Elementor issue you have to press "update" and wait & hope that it will save it. You can see some of the "nested element tabs performance issue" merged PR here https://github.com/elementor/elementor/pulls?q=is%3Apr+nested+is%3Aclosed but they are only in the main branch and a few still open https://github.com/elementor/elementor/pulls?q=is%3Apr+nested+is%3Aopen . So you could try a nightly build in case you can do that and see if it brings any improvement.

Otherwise you might need to restructure the page or split it up in smaller pages.

And of course: inform Elementor e.g. in this issue https://github.com/elementor/elementor/issues/24076

Does your hosting even support such high memory settings? Check with your provider to see how much you can even use. On cheap hosting you sometimes only get < 256MB so the wp-config settings doesn't change anything.

Nested elements: another issue they are working on to improve performance. Chrome is currently the fastest way to open such pages but it is still slow. There are already many PR on github to address those issues but it won't be in the next release.

https://imgur.com/a/KefidtK  is how it looks in a default Hello theme with Elementor (free).

So inspect your frontend elements and see if you have any CSS that is overriding it.

as dara4 is saying: you can use the free version with custom CSS. Just use the normal WP customizer - custom CSS field (or your theme or a plugin, many options). You just can't use `selector`. So give your items a class and use that infront of it

Every time I refresh my page, height of these flexboxes is really small and do not show full pictures or text…

The height is calculated by JS and set with a "min-height..." value on the flipbox holder. That said: this is not the normal flipbox right? It looks like https://themeprix.com/fancy-elementor-flipbox/ so contact the developer if you have any issue with it. But from my tests it works fine all the time, phone and desktop. And the jump in height is by design of the fancy-elementor-flipbox

wow, it's been a long time since I've seen an AVI video :-) Convert it to a mp4/h.264 as that is supported in all browsers. It also shows this error "“Content-Type” of “video/x-msvideo” is not supported" in your devlogs

https://github.com/gzzz/cloud9carousel looks very similar and I've used it in Elementor. But I've created a custom widget for a client. So you could do that too or try to use it in a HTML widget.

https://github.com/paigeadelethompson/jquery-circular-carousel is an alternative

you have to reimport it again. But the best is to ask in the Astra forum https://wordpress.org/support/theme/astra/ as it's their issue

again: create you own widget with the code in the first link. Then you can check if the session variable is set or not and display text/content or not. It is the same as the shortcode but you have a own widget and not a shortcode to remember :-)

$_SESSION is a php session so not related to URL parameters. That would be a $_GET or you can grab that with JS too. So different solutions for different setups :)

create a small addon and use it in there. You can copy & paste https://developers.elementor.com/docs/getting-started/first-addon/

if you want to use Elementor you have to rebuild it like the other people are saying. The theme has it's own footer/header builder you should use. If you don't like that you create a custom template with Elementor Pro or the Header & Footer Builder plugin. You can't just use Elementor in the Blocky footer builder.

how about https://creativethemes.com/blocksy/docs/footer-options/footer-introduction/ ?